The alcoholic cardiomyopathies--genuine and pseudo

Area of Science:

• Cardiology
• Toxicology
• Virology

Background:

• Alcoholic cardiomyopathy can manifest as hyperkinetic or hypokinetic heart failure, typically responding to thiamine.
• Chronic dilated cardiomyopathy in alcoholics, especially without malnutrition, often shows no response to thiamine.
• This lack of response suggests alternative etiologies beyond direct alcohol damage.

Purpose of the Study:

• To investigate the potential viral etiology of chronic dilated cardiomyopathy in alcoholics unresponsive to thiamine.
• To propose revised terminology for this condition.

Main Methods:

• Review of existing literature on alcoholic cardiomyopathy and thiamine response.
• Analysis of a study involving mice exposed to myotropic virus and alcohol.

Main Results:

• Alcohol consumption exacerbated viral cardiomyopathy in mice.
• Chronic dilated cardiomyopathy in alcoholics unresponsive to thiamine and nutrition may be secondary to viral myocarditis.

Conclusions:

• Dilated cardiomyopathy in alcoholics unresponsive to thiamine and nutrition should be termed 'dilated cardiomyopathy in an alcoholic'.
• A viral etiology should be considered for such cases.
• This distinction is crucial for accurate diagnosis and management.